git.m6w6.name Git - m6w6/ext-http/blob - http_api.c

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PECL :: http                                                         |
   4    +----------------------------------------------------------------------+
   5    | This source file is subject to version 3.0 of the PHP license, that  |
   6    | is bundled with this package in the file LICENSE, and is available   |
   7    | through the world-wide-web at http://www.php.net/license/3_0.txt.    |
   8    | If you did not receive a copy of the PHP license and are unable to   |
   9    | obtain it through the world-wide-web, please send a note to          |
  10    | license@php.net so we can mail you a copy immediately.               |
  11    +----------------------------------------------------------------------+
  12    | Copyright (c) 2004-2005 Michael Wallner <mike@php.net>               |
  13    +----------------------------------------------------------------------+
  14 */
  15
  16 /* $Id$ */
  17
  18 #ifdef HAVE_CONFIG_H
  19 #       include "config.h"
  20 #endif
  21 #include "php.h"
  22
  23 #include "SAPI.h"
  24 #include "ext/standard/url.h"
  25
  26 #include "php_http.h"
  27 #include "php_http_std_defs.h"
  28 #include "php_http_api.h"
  29 #include "php_http_headers_api.h"
  30 #include "php_http_send_api.h"
  31
  32 #ifdef ZEND_ENGINE_2
  33 #       include "zend_exceptions.h"
  34 #       include "php_http_exception_object.h"
  35 #endif
  36
  37 #include <ctype.h>
  38
  39 #ifdef HTTP_HAVE_MAGIC
  40 #       include <magic.h>
  41 #endif
  42
  43 ZEND_EXTERN_MODULE_GLOBALS(http);
  44
  45 /* char *pretty_key(char *, size_t, zend_bool, zend_bool) */
  46 char *_http_pretty_key(char *key, size_t key_len, zend_bool uctitle, zend_bool xhyphen)
  47 {
  48         if (key && key_len) {
  49                 size_t i;
  50                 int wasalpha;
  51                 if (wasalpha = isalpha((int) key[0])) {
  52                         key[0] = (char) (uctitle ? toupper((int) key[0]) : tolower((int) key[0]));
  53                 }
  54                 for (i = 1; i < key_len; i++) {
  55                         if (isalpha((int) key[i])) {
  56                                 key[i] = (char) (((!wasalpha) && uctitle) ? toupper((int) key[i]) : tolower((int) key[i]));
  57                                 wasalpha = 1;
  58                         } else {
  59                                 if (xhyphen && (key[i] == '_')) {
  60                                         key[i] = '-';
  61                                 }
  62                                 wasalpha = 0;
  63                         }
  64                 }
  65         }
  66         return key;
  67 }
  68 /* }}} */
  69
  70 /* {{{ */
  71 void _http_key_list_default_decoder(const char *encoded, size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
  72 {
  73         *decoded = estrndup(encoded, encoded_len);
  74         *decoded_len = (size_t) php_url_decode(*decoded, encoded_len);
  75 }
  76 /* }}} */
  77
  78 /* {{{ */
  79 STATUS _http_parse_key_list(const char *list, HashTable *items, char separator, http_key_list_decode_t decode, zend_bool first_entry_is_name_value_pair TSRMLS_DC)
  80 {
  81         const char *key = list, *val = NULL;
  82         int vallen = 0, keylen = 0, done = 0;
  83         zval array;
  84
  85         Z_ARRVAL(array) = items;
  86
  87         if (!(val = strchr(list, '='))) {
  88                 return FAILURE;
  89         }
  90
  91 #define HTTP_KEYLIST_VAL(array, k, str, len) \
  92         { \
  93                 char *decoded; \
  94                 size_t decoded_len; \
  95                 if (decode) { \
  96                         decode(str, len, &decoded, &decoded_len TSRMLS_CC); \
  97                 } else { \
  98                         decoded_len = len; \
  99                         decoded = estrndup(str, decoded_len); \
 100                 } \
 101                 add_assoc_stringl(array, k, decoded, decoded_len, 0); \
 102         }
 103 #define HTTP_KEYLIST_FIXKEY() \
 104         { \
 105                         while (isspace(*key)) ++key; \
 106                         keylen = val - key; \
 107                         while (isspace(key[keylen - 1])) --keylen; \
 108         }
 109 #define HTTP_KEYLIST_FIXVAL() \
 110         { \
 111                         ++val; \
 112                         while (isspace(*val)) ++val; \
 113                         vallen = key - val; \
 114                         while (isspace(val[vallen - 1])) --vallen; \
 115         }
 116
 117         HTTP_KEYLIST_FIXKEY();
 118
 119         if (first_entry_is_name_value_pair) {
 120                 HTTP_KEYLIST_VAL(&array, "name", key, keylen);
 121
 122                 /* just one name=value */
 123                 if (!(key = strchr(val, separator))) {
 124                         key = val + strlen(val);
 125                         HTTP_KEYLIST_FIXVAL();
 126                         HTTP_KEYLIST_VAL(&array, "value", val, vallen);
 127                         return SUCCESS;
 128                 }
 129                 /* additional info appended */
 130                 else {
 131                         HTTP_KEYLIST_FIXVAL();
 132                         HTTP_KEYLIST_VAL(&array, "value", val, vallen);
 133                 }
 134         }
 135
 136         do {
 137                 char *keydup = NULL;
 138
 139                 if (!(val = strchr(key, '='))) {
 140                         break;
 141                 }
 142
 143                 /* start at 0 if first_entry_is_name_value_pair==0 */
 144                 if (zend_hash_num_elements(items)) {
 145                         ++key;
 146                 }
 147
 148                 HTTP_KEYLIST_FIXKEY();
 149                 keydup = estrndup(key, keylen);
 150                 if (!(key = strchr(val, separator))) {
 151                         done = 1;
 152                         key = val + strlen(val);
 153                 }
 154                 HTTP_KEYLIST_FIXVAL();
 155                 HTTP_KEYLIST_VAL(&array, keydup, val, vallen);
 156                 efree(keydup);
 157         } while (!done);
 158
 159         return SUCCESS;
 160 }
 161 /* }}} */
 162
 163 /* {{{ void http_error(long, long, char*) */
 164 void _http_error_ex(long type, long code, const char *format, ...)
 165 {
 166         va_list args;
 167         TSRMLS_FETCH();
 168
 169         va_start(args, format);
 170         if (type == E_THROW) {
 171 #ifdef ZEND_ENGINE_2
 172                 char *message;
 173                 vspprintf(&message, 0, format, args);
 174                 zend_throw_exception(http_exception_get_for_code(code), message, code TSRMLS_CC);
 175 #else
 176                 type = E_WARNING;
 177 #endif
 178         }
 179         if (type != E_THROW) {
 180                 php_verror(NULL, "", type, format, args TSRMLS_CC);
 181         }
 182         va_end(args);
 183 }
 184 /* }}} */
 185
 186 /* {{{ void http_log(char *, char *, char *) */
 187 void _http_log_ex(char *file, const char *ident, const char *message TSRMLS_DC)
 188 {
 189         time_t now;
 190         struct tm nowtm;
 191         char datetime[128];
 192
 193         time(&now);
 194         strftime(datetime, sizeof(datetime), "%Y-%m-%d %H:%M:%S", php_localtime_r(&now, &nowtm));
 195
 196 #define HTTP_LOG_WRITE(file, type, msg) \
 197         if (file && strlen(file)) { \
 198                 php_stream *log = php_stream_open_wrapper(file, "ab", REPORT_ERRORS|ENFORCE_SAFE_MODE, NULL); \
 199                  \
 200                 if (log) { \
 201                         php_stream_printf(log TSRMLS_CC, "%s [%12s] %32s <%s>%s", datetime, type, msg, SG(request_info).request_uri, PHP_EOL); \
 202                         php_stream_close(log); \
 203                 } \
 204          \
 205         }
 206
 207         HTTP_LOG_WRITE(file, ident, message);
 208         HTTP_LOG_WRITE(HTTP_G(log).composite, ident, message);
 209 }
 210 /* }}} */
 211
 212 /* {{{ STATUS http_exit(int, char*, char*) */
 213 STATUS _http_exit_ex(int status, char *header, char *body, zend_bool send_header TSRMLS_DC)
 214 {
 215         if (status || send_header) {
 216                 if (SUCCESS != http_send_status_header(status, send_header ? header : NULL)) {
 217                         http_error_ex(HE_WARNING, HTTP_E_HEADER, "Failed to exit with status/header: %d - %s", status, header ? header : "");
 218                         STR_FREE(header);
 219                         STR_FREE(body);
 220                         return FAILURE;
 221                 }
 222         }
 223
 224         if (body) {
 225                 PHPWRITE(body, strlen(body));
 226         }
 227
 228         switch (status)
 229         {
 230                 case 301:       http_log(HTTP_G(log).redirect, "301-REDIRECT", header);                 break;
 231                 case 302:       http_log(HTTP_G(log).redirect, "302-REDIRECT", header);                 break;
 232                 case 304:       http_log(HTTP_G(log).cache, "304-CACHE", header);                               break;
 233                 case 405:       http_log(HTTP_G(log).allowed_methods, "405-ALLOWED", header);   break;
 234                 default:        http_log(NULL, header, body);                                                                   break;
 235         }
 236
 237         STR_FREE(header);
 238         STR_FREE(body);
 239
 240         zend_bailout();
 241         /* fake */
 242         return SUCCESS;
 243 }
 244 /* }}} */
 245
 246 /* {{{ STATUS http_check_method(char *) */
 247 STATUS _http_check_method_ex(const char *method, const char *methods)
 248 {
 249         const char *found;
 250
 251         if (    (found = strstr(methods, method)) &&
 252                         (found == method || !isalpha(found[-1])) &&
 253                         (!isalpha(found[strlen(method) + 1]))) {
 254                 return SUCCESS;
 255         }
 256         return FAILURE;
 257 }
 258 /* }}} */
 259
 260 /* {{{ zval *http_get_server_var_ex(char *, size_t) */
 261 PHP_HTTP_API zval *_http_get_server_var_ex(const char *key, size_t key_size, zend_bool check TSRMLS_DC)
 262 {
 263         zval **hsv;
 264         zval **var;
 265
 266         if (SUCCESS != zend_hash_find(&EG(symbol_table), "_SERVER", sizeof("_SERVER"), (void **) &hsv)) {
 267                 return NULL;
 268         }
 269         if (SUCCESS != zend_hash_find(Z_ARRVAL_PP(hsv), (char *) key, key_size, (void **) &var)) {
 270                 return NULL;
 271         }
 272         if (check && !(Z_STRVAL_PP(var) && Z_STRLEN_PP(var))) {
 273                 return NULL;
 274         }
 275         return *var;
 276 }
 277 /* }}} */
 278
 279 /* {{{ STATUS http_get_request_body(char **, size_t *) */
 280 PHP_HTTP_API STATUS _http_get_request_body_ex(char **body, size_t *length, zend_bool dup TSRMLS_DC)
 281 {
 282         *length = 0;
 283         *body = NULL;
 284
 285         if (SG(request_info).raw_post_data) {
 286                 *length = SG(request_info).raw_post_data_length;
 287                 *body = (char *) (dup ? estrndup(SG(request_info).raw_post_data, *length) : SG(request_info).raw_post_data);
 288                 return SUCCESS;
 289         }
 290         return FAILURE;
 291 }
 292 /* }}} */
 293
 294 /* {{{ char *http_chunked_decode(char *, size_t, char **, size_t *) */
 295 PHP_HTTP_API const char *_http_chunked_decode(const char *encoded, size_t encoded_len, char **decoded, size_t *decoded_len TSRMLS_DC)
 296 {
 297         const char *e_ptr;
 298         char *d_ptr;
 299
 300         *decoded_len = 0;
 301         *decoded = ecalloc(1, encoded_len);
 302         d_ptr = *decoded;
 303         e_ptr = encoded;
 304
 305         while (((e_ptr - encoded) - encoded_len) > 0) {
 306                 size_t chunk_len = 0, EOL_len = 0;
 307                 int eol_mismatch = 0;
 308                 char *n_ptr;
 309
 310                 chunk_len = strtol(e_ptr, &n_ptr, 16);
 311
 312                 /* check if:
 313                  * - we could not read in chunk size
 314                  * - chunk size is not followed by (CR)LF|NUL
 315                  */
 316                 if ((n_ptr == e_ptr) || (*n_ptr && (eol_mismatch = n_ptr != http_locate_eol(e_ptr, &EOL_len)))) {
 317                         /* don't fail on apperently not encoded data */
 318                         if (e_ptr == encoded) {
 319                                 memcpy(*decoded, encoded, encoded_len);
 320                                 *decoded_len = encoded_len;
 321                                 return encoded + encoded_len;
 322                         } else {
 323                                 efree(*decoded);
 324                                 if (eol_mismatch) {
 325                                         if (EOL_len == 2) {
 326                                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid character (expected 0x0D 0x0A; got: 0x%X 0x%X)", *n_ptr, *(n_ptr + 1));
 327                                         } else {
 328                                                 http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid character (expected 0x0A; got: 0x%X)", *n_ptr);
 329                                         }
 330                                 } else {
 331                                         char *error = estrndup(n_ptr, strcspn(n_ptr, "\r\n "));
 332                                         http_error_ex(HE_WARNING, HTTP_E_ENCODING, "Invalid chunk size: '%s' at pos %d", error, n_ptr - encoded);
 333                                         efree(error);
 334                                 }
 335                                 return NULL;
 336                         }
 337                 } else {
 338                         e_ptr = n_ptr;
 339                 }
 340
 341                 /* reached the end */
 342                 if (!chunk_len) {
 343                         break;
 344                 }
 345
 346                 memcpy(d_ptr, e_ptr += EOL_len, chunk_len);
 347                 d_ptr += chunk_len;
 348                 e_ptr += chunk_len + EOL_len;
 349                 *decoded_len += chunk_len;
 350         }
 351
 352         return e_ptr;
 353 }
 354 /* }}} */
 355
 356 /* {{{ char *http_guess_content_type(char *magic_file, long magic_mode, void *data, size_t size, http_send_mode mode) */
 357 PHP_HTTP_API char *_http_guess_content_type(const char *magicfile, long magicmode, void *data_ptr, size_t data_len, http_send_mode data_mode TSRMLS_DC)
 358 {
 359         char *ct = NULL;
 360
 361 #ifdef HTTP_HAVE_MAGIC
 362         struct magic_set *magic = magic_open(magicmode);
 363
 364         if (!magic) {
 365                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "Invalid magic mode: %ld", magicmode);
 366         } else if (-1 == magic_load(magic, magicfile)) {
 367                 http_error_ex(HE_WARNING, HTTP_E_RUNTIME, "Failed to load magic database '%s'", magicfile);
 368         } else {
 369                 const char *ctype = NULL;
 370
 371                 switch (data_mode)
 372                 {
 373                         case SEND_RSRC:
 374                         {
 375                                 char *buffer;
 376                                 size_t b_len;
 377
 378                                 b_len = php_stream_copy_to_mem(data_ptr, &buffer, 65536, 0);
 379                                 ctype = magic_buffer(magic, buffer, b_len);
 380                                 efree(buffer);
 381                         }
 382                         break;
 383
 384                         case SEND_DATA:
 385                                 ctype = magic_buffer(magic, data_ptr, data_len);
 386                         break;
 387
 388                         default:
 389                                 ctype = magic_file(magic, data_ptr);
 390                         break;
 391                 }
 392
 393                 if (ctype) {
 394                         ct = estrdup(ctype);
 395                 } else {
 396                         http_error(HE_WARNING, HTTP_E_RUNTIME, "Failed to guess Content-Type");
 397                 }
 398
 399                 if (magic) {
 400                         magic_close(magic);
 401                 }
 402         }
 403 #else
 404         http_error(HE_WARNING, HTTP_E_RUNTIME, "Cannot guess Content-Type; libmagic not available");
 405 #endif
 406
 407         return ct;
 408 }
 409 /* }}} */
 410 /*
 411  * Local variables:
 412  * tab-width: 4
 413  * c-basic-offset: 4
 414  * End:
 415  * vim600: noet sw=4 ts=4 fdm=marker
 416  * vim<600: noet sw=4 ts=4
 417  */
 418